SpecPatch 5 is a rapid-setting, general-purpose concrete repair mortar that reaches a durable, shapeable finish in about 5 minutes
SpecPatch 5 works on concrete floors, walls, precast, tilt-up, and masonry surfaces, for both horizontal and vertical applications. It can be shaved or sanded once set, and blends in with a natural concrete-gray finish.
Key Features & Benefits
- One-component — just add water
- Very rapid setting for fast repairs
- Excellent adhesion and color matching to surrounding concrete
- Self-cures under normal conditions
Application Instructions
- Ensure the concrete is solid and free of oil, grease, dust, and other contaminants
- Saw-cut 1/8" deeper than the repair depth around the perimeter for a notched, reinforced edge
- Roughen the surface to a minimum CSP of 5 per ICRI 310.2; the concrete should be damp but not wet, with no standing water
- Clean exposed steel reinforcement of rust and coat with SpecPrep SB
- Mix 6.75-7.25 pints of water per 50 lb bag with a low-speed drill, adding water first, for 2-3 minutes
- Mixing with SpecChem StrongBond Acrylic Bonder is recommended for thin, high-wear horizontal applications
- Apply in layers up to 1" thick, roughening the surface between layers for better bond; texture the final layer to match surrounding concrete
- In dry climates, use an ASTM C309 compliant water-based curing compound
Technical Data Summary
- Set Time (70°F, ASTM C266): Initial set 5 minutes, final set 8 minutes
- Compressive Strength: 1,500 psi at 3 hours, 6,000 psi at 28 days
- Bond Strength: 1,680 psi slant shear at 7 days
- Flexural Strength: 650 psi at 28 days
- Shelf Life: 12 months, stored in a dry area away from excessive heat, humidity, and sunlight
Packaging
Available in 50 lb bags.